Blower Speed Control
WARNING: This page is about a different car, the 1999 Cadillac Eldorado and 1999 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
For every program number and climate control panel setting, ACM has a calculated blower motor voltage. Based on a signal sent from the ACM, a variable voltage is sent to the blower motor. Blower speed for the rear console blower is controlled manually.